LBMUBOIDBA 15 hand is reduced to a mere excrescence in the Potto (Perodicticus). All the digits of the hand are long and slender; they decrease in size in the order 4, 3, 5, 2, 1 ; and syndactyly is of the same extent as in Man in the true Lemurs, but more extensive in some other forms. The foot has four slender toes and a stout hallux, which can be abducted till it is at right angles to the middle line of the limb. Fia. 3.óDemidofi's Galago (Hemigalago demidoj/i). All digits except the index of the foot are provided with nails, but that digit has a well-marked claw. The distal ends of the nails are convex, truncated or pointed. And the only exception to these conditions is the Aye-Aye (Chiromys), which has claws on all digits of the hands and feet (figs. 3 to 6). The skin of the palms and soles has well-marked pads.